package demo.main;

import static net.sf.dynamicreports.report.builder.DynamicReports.col;
import static net.sf.dynamicreports.report.builder.DynamicReports.field;
import static net.sf.dynamicreports.report.builder.DynamicReports.report;
import static net.sf.dynamicreports.report.builder.DynamicReports.type;

import java.math.BigDecimal;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.dynamicreports.report.builder.FieldBuilder;
import net.sf.dynamicreports.report.builder.column.PercentageColumnBuilder;
import net.sf.dynamicreports.report.builder.column.TextColumnBuilder;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.JRDataSource;

import org.nutz.mvc.annotation.At;
import org.nutz.mvc.annotation.Ok;

public class GroupRow extends MutiReport {
	private FieldBuilder<BigDecimal> unitPriceField;

	@At("/getGroupRow")
	@Ok("json")
	public String getPercentageColumns(HttpServletRequest request,
			HttpServletResponse response) {
		System.out.println("getGroupRow");
		build(request, response);
		return resultResult;
	}

	@Override
	protected void build(HttpServletRequest request,
			HttpServletResponse response) {
		try {
			unitPriceField = field("unitprice", BigDecimal.class);

			TextColumnBuilder<String> itemColumn = col.column("产品", "item",
					type.stringType()).setPrintRepeatedDetailValues(false);
			TextColumnBuilder<Integer> quantityColumn = col.column("数量",
					"quantity", type.integerType());
			PercentageColumnBuilder quantityPercColumn = col.percentageColumn(
					"数量 [%]", quantityColumn);
			PercentageColumnBuilder unitPricePercColumn = col.percentageColumn(
					"单价 [%]", unitPriceField);

			reportBuilder = report()
					.setTemplate(Templates.reportTemplate)
					.fields(unitPriceField)
					.columns(itemColumn, quantityColumn, quantityPercColumn,
							unitPricePercColumn)
					.title(Templates.createTitleComponent(""))
					.pageFooter(Templates.footerComponent)
					.setDataSource(createDataSource());
			setResult(reportBuilder.toJasperPrint(), request, response);
		} catch (DRException e) {
			e.printStackTrace();
		}
	}

	private JRDataSource createDataSource() {
		DataSource dataSource = new DataSource("item", "quantity", "unitprice");
		dataSource.add("图书", 3, new BigDecimal(11));
		dataSource.add("图书", 1, new BigDecimal(15));
		dataSource.add("图书", 5, new BigDecimal(10));
		dataSource.add("图书", 8, new BigDecimal(9));
		dataSource.add("电脑", 1, new BigDecimal(2));
		dataSource.add("电脑", 1, new BigDecimal(2));
		dataSource.add("电脑", 1, new BigDecimal(2));
		dataSource.add("电脑", 1, new BigDecimal(2));
		return dataSource;
	}
}
